Not to mention that, if consciousness were proven to be wholly material in both its origin and nature, the consequences would extend even beyond the rejection of an immaterial soul, for such a discovery would also dismantle the classical doctrine of free will.
This is because the classical Christian understanding of freedom isn’t satisfied by the mere experience of choosing, nor by the simple fact that one acts in accordance with one’s own desires: rather, it presupposes that the human person is, in a meaningful and irreducible sense, a genuine originator of action.
Under a fully material account of consciousness every thought, desire, intention, and act of deliberation would arise from prior physical states of the brain, the body, and the surrounding environment. Even if these processes were extraordinarily complex, they would still belong to a causal order governed by material conditions and, in that case, a human decision would no longer to be the expression of a self-determining subject, but the terminus of a causal sequence whose decisive conditions were already in place before the person became reflectively aware of “choosing.”
The sense of agency might remain phenomenologically vivid, but its metaphysical depth would be radically diminished.
And this is where compatibilism fails hard to resolve the difficulty: compatibilism claims that freedom is compatible with determinism, because an act can still count as free if it proceeds from the agent’s own internal states (his desires, intentions, or character) rather than from external coercion. On this view, I act freely if I do what I want, even if what I want is itself causally determined.
But this move doesn’t preserve freedom in the robust sense required by classical moral and theological thought, it merely relocates necessity from the outside to the inside. The decisive point isn’t whether my action came from my own desires rather than from a gun to my head, the real issue is whether I am, in any ultimate sense, the author of those desires. If my motives, dispositions, and acts of will are themselves wholly produced by prior material causes that I didn’t choose and couldn’t have fundamentally altered, then my action may be voluntary, but it isn’t free will in the traditional, libertarian sense, it’s still the outcome of necessity, only internalized.
Compatibilism therefore preserves voluntariness, not genuine self-determination, it can explain the distinction between coerced and uncoerced action, but it cannot explain how an agent is ultimately responsible for actions that flow from a motivational structure he didn’t originate. If my character is the product of genetics, neurobiology, developmental history, social conditioning, and environmental influence, all operating within a closed material framework, then the fact that I act “from myself” becomes ambiguous, because the self in question is itself an effect before it is a cause.
This is why compatibilism is totally insufficient for the classical Christian picture of moral responsibility: Christianity does not merely require that human beings act voluntarily; it requires that they be accountable in a deeper sense.
Sin, repentance, guilt, merit, praise, blame, and judgment all presuppose not only that actions issue from the person, but that the person stands behind them as a genuinely responsible source and, if the will is wholly the product of prior material states, then responsibility becomes merely consequential or pragmatic rather than truly desert-based. One may still punish, reward, or reform individuals for social reasons, but the stronger notion that they genuinely deserve blame or praise in the full moral sense becomes enormously harder to justify.
For the same reason, the compatibilist account would also dismantle the spiritual drama at the heart of Christianity: in the classical view, holiness and sin are not merely behavioral outcomes; they are free responses to grace.
But if every human response is fully generated by material causes, then the distinction between rejecting grace and accepting it begins to look less like a genuinely free moral act and more like the inevitable output of antecedent conditions. The language of conversion, culpability, and sanctification may remain, but its metaphysical foundation would be dismantled, only an empty husk would remain.
For all these reasons, a strong demonstration that consciousness is wholly material would dismantle not only the doctrine of the soul but also the very possibility of true free will, and compatibilism would not truly rescue the situation, because it changes the meaning of freedom rather than preserving it, it offers a theory of internally uncoerced action, but not a theory of genuine ultimate agency.
In other words, I think it’s clear why such a discovery would dismantle the entire moral and spiritual architecture of Christianity, on top of dismantling the doctrine of the soul and radically weakening the force and evidentiary value of the apostolic witness. For, as I have argued in a previous post, if every encounter with the dead were shown to be nothing more than the product of internal brain processes rather than a genuine contact with reality, then even the apostolic witness (however much more exalted its claims may be) would be struck at its very foundation, because the decision to believe that the apostles truly saw what they claimed to have seen would then become wholly arbitrary.
This discovery would:
- Destroy the doctrine of the soul.
- Destroy the doctrine of true free will.
- Radically diminish the evidentiary value of the apostolic witness.
If such a discovery were ever established, it would be the equivalent of a RS-28 Sarmat aimed at Christianity.